Vertical Slice Demos Provide a Clear-Cut Advantage. By Geoff Thew. Published Feb 14, 2014. ... Sometimes, though, developers go the extra mile and build a vertical slice to demonstrate their game.

In the video, Bellos first makes a vertical slice through the center of the cake from one side to the other (“the prime steak of that cake, the T-bone cut,” he jokes), then makes a parallel slice.

Turn it so you can cut another vertical slice crosswise so you have four equal wedges. Keep turning and cutting in this way until you have eight wedges. Next, take each wedge, stand it up straight ...